Coil Formers

Coil formers are components found in a transformer(an electrical device that transfers energy between two or more circuits). They're commonly used in electrical printed circuit boards(PCBs) to produce the energy needed to power electrical machines such as motors and generators.

Coil former applications

Coil formers are commonly used in transformers or as reactors in switch-mode power supplies. Transformers are used to bring voltage up or down in an AC electrical circuit. Both transformers and switch-mode power supplies can be used to convert mains AC power to DC power.

There are transformers all over every house. They are inside the chargers used to charge your mobile phone and other personal computing devices. They're also found in loudspeakers and microphones.

Advantages of using coil formers

  • Coil formers come in different types depending on whether you need to mount them horizontally or vertically.
  • Coil formers are usually made with an insulating material, such as thermosetting plastic, and are resistant to soldering and soldering heat.

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Description Price Accessory Type For Use With Dimensions Number of Pins Material Depth Length Width Maximum Temperature
RS Stock No. 167-0164
Mfr. Part No.B66398W1024T001
BrandEPCOS
TWD72.90
Each (In a Box of 40)
units
ETD 59/31/22 Coil Former B66397 66.9 x 66.2 x 49.2mm 24 GFR Polyterephthalate 49.2mm 66.9mm 66.2mm +180°C
RS Stock No. 647-9525
Mfr. Part No.B66398W1024T001
BrandEPCOS
TWD118.00
Each
units
ETD 59/31/22 Coil Former B66397 66.9 x 66.2 x 49.2mm 24 GFR Polyterephthalate 49.2mm 66.9mm 66.2mm +180°C
RS Stock No. 167-0500
Mfr. Part No.B66418W1008D001
BrandEPCOS
TWD23.10
Each (In a Box of 630)
units
EFD 20/10/7 Coil Former B66417 20 x 20.3 x 10.4mm 8 GFR Thermosetting Plastic 10.4mm 20mm 20.3mm +180°C
RS Stock No. 170-1502
Mfr. Part No.B66230A1114T001
BrandEPCOS
TWD42.90
Each (On a Reel of 240)
units
Horizontal Coil Former E 32/16/9 Core - 14 GFR Polyterephthalate - 37.5mm 35mm +155°C
RS Stock No. 125-3619
Mfr. Part No.B66230A1114T001
BrandEPCOS
TWD78.20
Each (In a Pack of 5)
units
Horizontal Coil Former E 32/16/9 Core - 14 GFR Polyterephthalate - 37.5mm 35mm +155°C
RS Stock No. 647-9553
Mfr. Part No.B66418W1008D001
BrandEPCOS
TWD46.20
Each (In a Pack of 5)
units
EFD 20/10/7 Coil Former B66417 20 x 20.3 x 10.4mm 8 GFR Thermosetting Plastic 10.4mm 20mm 20.3mm +180°C
RS Stock No. 125-3383
Mfr. Part No.B65808N1006D001
BrandEPCOS
TWD35.60
Each (In a Pack of 10)
units
Vertical Coil Former RM 6 Core - 6 GFR Thermosetting Plastic - - 12.3 (Dia.)mm +180°C
RS Stock No. 125-3385
Mfr. Part No.B65808N1006D002
BrandEPCOS
TWD34.80
Each (In a Pack of 10)
units
Vertical Coil Former RM 6 Core - 6 GFR Thermosetting Plastic - - 12.3 (Dia.)mm +180°C
RS Stock No. 647-9143
Mfr. Part No.B65808E1508T001
BrandEPCOS
TWD47.80
Each (In a Pack of 5)
units
RM 6 Coil Former B65807 18.4 x 16 x 12.65mm 8 GFR Polyterephthalate 12.65mm 18.4mm 16mm +155°C
RS Stock No. 170-1435
Mfr. Part No.B65808N1006D002
BrandEPCOS
TWD22.00
Each (On a Reel of 500)
units
Vertical Coil Former RM 6 Core - 6 GFR Thermosetting Plastic - - 12.3 (Dia.)mm +180°C
RS Stock No. 170-1434
Mfr. Part No.B65808N1006D001
BrandEPCOS
TWD21.50
Each (On a Reel of 500)
units
Vertical Coil Former RM 6 Core - 6 GFR Thermosetting Plastic - - 12.3 (Dia.)mm +180°C
RS Stock No. 167-8498
Mfr. Part No.B65808E1508T001
BrandEPCOS
TWD25.10
Each (In a Box of 500)
units
RM 6 Coil Former B65807 18.4 x 16 x 12.65mm 8 GFR Polyterephthalate 12.65mm 18.4mm 16mm +155°C
RS Stock No. 125-3375
Mfr. Part No.B65806N1106D001
BrandEPCOS
TWD37.50
Each (In a Pack of 10)
units
Vertical Coil Former RM 5 Core - 6 GFR Thermosetting Plastic - - 10.1 (Dia.)mm +155°C
RS Stock No. 170-1498
Mfr. Part No.B66208B1110T001
BrandEPCOS
TWD22.00
Each (On a Reel of 450)
units
Horizontal Coil Former E 25/13/7 Core - 10 GFR Polyterephthalate - 27.5mm 28mm +155°C
RS Stock No. 170-1412
Mfr. Part No.B65714K1020T001
BrandEPCOS
TWD416.50
Each (On a Reel of 8)
units
Vertical Coil Former PM 87 x 70 Core - 20 GFR Polyterephthalate - 87.6mm 66.2mm +180°C
RS Stock No. 170-1507
Mfr. Part No.B66252B0000M001
BrandEPCOS
TWD91.40
Each (On a Reel of 100)
units
E 55 - 37 x 44 x 35.4mm 14 GFR 6-Polyamide 44mm 37mm 35.4mm +155°C
RS Stock No. 212-5088
Mfr. Part No.B65685B1016T001
BrandEPCOS
TWD288.00
Each
units
PM 62/49 Coil Former B65684 75.5 x 48.5 x 48mm 16 GFR Polyterephthalate 48mm 75.5mm 48.5mm +155°C
RS Stock No. 125-3330
Mfr. Part No.B65522B0000T001
BrandEPCOS
TWD11.20
Each (In a Pack of 50)
units
Vertical Coil Former P 9 x 5 Core - - GFR Polyterephthalate - - 7.4 (Dia.)mm +155°C
RS Stock No. 212-9614
Mfr. Part No.B66242J1000R001
BrandEPCOS
TWD165.00
Each
units
E 42 B66325, B66329 29.2 x 35 x 37.5mm 8 - 37.5mm 29.2mm 35mm -
RS Stock No. 125-3345
Mfr. Part No.B65612B0000T001
BrandEPCOS
TWD31.90
Each (In a Pack of 20)
units
Vertical Coil Former P 36 x 22 Core - - GFR Polyterephthalate - - 11.5 (Dia.)mm +155°C